Q.

The size of an IP address in IPv6 is _________

A. 32 bits
B. 64 bits
C. 128 bits
D. 265 bits
Answer» C. 128 bits
Explanation: an ipv6 address is 128 bits long. therefore, 2128 i.e. 340 undecillion addresses are possible in ipv6. ipv4 has only 4 billion possible addresses and ipv6 would be a brilliant alternative in case ipv4 runs out of possible new addresses.
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